I have concidered GAMI's but since I get my engine to run smooth and
cool LOP I didn't think the cost would be worth it. On the Mooney
owners list we have some very knowledgable folks from GAMI that
participate in the lists and have told me that 20-30 LOP at 70% will be
no detonation issue at all...


Matt Barrow wrote:

"Jon Kraus" wrote in message
.. .

Yes a TCM 200 hp IO-360-A3B6D with no GAMI's. I usually cruise 5-6k 24
squared and 20-30 LOP.


In calculating off the top of my head, you're running about 70% (your's is
200 HP?); see the chart below.

Have you considered GAMI's?

Try this: 12.5K, 185kts, 14.5gph (30.5"/2350 RPM); smooth as silk, even at
idle.


Matt Barrow wrote:

"Jon Kraus" wrote in message
m...


Third I am now learning and practicing everything I can about Lean of
Peak (LOP) operations in order to save money on fuel.


http://www.advancedpilot.com/index.html - expensive ($1000), but worth
every penny Save gas, but more importantly, your engine. (see below)



I have found that in cruise I can save many gallons-per-hour by twisting
the red knob until the EGT's peak and then get to 10-20 degrees on the
other side of peak temperatures. I know that this will not work for
everyone but for my IO-360 it gives me a cool, smooth running engine that
is only drinking 9.5 GPH.


At what MP? Throttle setting? Altitude?

http://www.avweb.com/news/columns/182045-1.html

Yes, cool and smooth...but possibly with excessive internal pressure.

Red Box = No Fly Zone
At and below about 60% power, there is no red box.
At about 65% power, 100ºF ROP to Peak.
At about 70%, 125ºF ROP to 25ºF LOP.
At about 75%, 180ºF ROP to 40ºF LOP.
At about 80%, 200ºF ROP to 60ºF LOP


http://www.avweb.com/news/columns/182084-1.html



Have higher fuel prices forced you to adjust your operations?


Fuel here is $4.15, up from $3.45 so it translates to about $11 more an
hour. Considering our hourly DOC & Reserve is around $135 an hour, $11 is
minor.

We did cancel a optional trip to the "Big City" for shopping.



I'm sure that over the years when fuel prices have peaked, folks have
made changes, but since I am a new owner (working on our second year) it
is my first experience at spiking prices. So what say you?


LOP is your best bet. IIRC, the Mooney is running a TCM? If so,
GAMIjectors.